Re: linux-3.8.5-rt2 does not work with GCC-4.8.2 and GCC-4.9.2

[Igor Plyatov <plyatov@gmail.com>]

Dear Gary,

thank you very much for help!

Now kernel works.

Best wishes!
--
Igor Plyatov

> On 2015-05-28 07:31, Igor Plyatov wrote:
>> Dear all,
>>
>> My device is Voipac VMX51 machine based on i.MX51 CPU.
>>
>> Previously I use Poky-Dylan-9.0.2 and custom linux kernel 3.8.5 with 
>> Real Time patch 3.8.4-rt.
>> Kernel works fine if it was compiled by GCC-4.5.3 (some very old 
>> OpenEmbedded) or GCC-4.7.2 (poky-dylan-9.0.2).
>>
>> At some moment I decided to upgrade onto Poky-Dizzy-12.0.0 or 
>> Poky-Fido-13.0.0, but encounter an issue with kernel operation.
>> Kernel compiled by GCC-4.8.2 or GCC-4.9.2 simply does not work at 
>> all. No anyone message was printed at terminal after loading of 
>> kernel by boot-loader.
>>
>> To confirm issue, I intentionally compile same kernel source tree by 
>> hands with GCC-4.7.2 and it works fine.
>> This is made by small script like following:
>>
>> PATH=$PATH:..../yocto-build-poky-dylan-9.0.2/tmp/sysroots/x86_64-linux/usr/bin/armv7a-vfp-neon-poky-linux-gnueabi 
>>
>> "make ARCH=arm CROSS_COMPILE=arm-poky-linux-gnueabi-"
>>
>> Does somebody experience similar issues with kernel compiled by old 
>> and new compilers?
>>
>> Unfortunately I does not know a way how to resolve this issue with 
>> new compilers.
>> Can you recommend how to resolve issue with compiler version in 
>> newest Poky?
>
> Check to make sure your kernel has these two patches applied
>
>
>